Alexandee smith



(No Model.)

A. SMITH.

FLASK WEIGHT FOR MOLDS.

No. 342,882. Patented June 1, 1886.

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ALEXANDER SMITH, OF PALMYRA, NEW YORK.

FLASK-WEIGHT FOR MOLDS..

SPECIFICATION forming part of Letters Patent No. 342,882, dated June 1, 1886.

Application filed March 24, i886. Serial No. 196,405. (No model.)

To all whom it may concern:

Be it known that I, ALEXANDER SMITH, of Palmyra, in the county of Wayne and State of New York, have invented certain new and useful Improvements in Flask-VVeights for Molds in Casting, of which the following isa specification.

My invention consists in a weight for use with snap-flask or bench molds, to prevent the upper part of the mold from lifting or breaking out when the iron is poured in.

In the drawings hereto annexed, Figure 1 is a perspective view of a mold with my improved weight applied; Fig. 2, a perspective view of the weight, showing at one corner a movable flange.

As is well understood by those familiar with this; class of work, a snap-flask is employed which is molded up in the usual way, after which the patterns are drawn, the flask and mold closed again, and then the flask is unsnapped and taken off the mold, leaving the latter on the bottom board. The molder then lifts the bottom board with the mold upon it and places them upon the floor, and beforepouring iron into the mold he places a weight thereon to keep the upper part of the mold from lifting. The weights now generally used for this purpose consist merely of a flat body or plate of iron, which, while answering to hold down the upper part of the mold leaves the sides unprotected, and as a consequence it often happens that the iron in being poured into the mold breaks away at or from the sprue or through the sides, particularly if there be a thin place or places in the mold. Such breakage of course involves a loss of time, labor, and material, with consequent expense, and it is a matter of importance to prevent its possibility. This I accomplish by forming the weight with a downwardly-extendin g flange or flanges, which may extend entirely around the mold, or may cover only the point or points where there is danger of the mold giving away. This is the essential feature of the invention, the practical application or embodiment of which may be varied considerably, according to the size, shape, and character of the mold.

The flange or flanges may be fixed removable, and they, as well as the body of the weight,may be made in one piece or in separate pieces, as found expedient. The size, shape, and location mold or the top of the weight, and secured at the meeting corners by hooks c. In said figure the flanges d of the weight are shown at the corners only, but they may be carried entirely around the weight, as indicated by dotted lines, or along one or more sides or cornersonly.

In practice I prefer to extend the flanges down beyond the parting-line of the mold, as shown in Fig. 1; but this is not essential.

In Fig. 2 thebody of the weight is represented as made in one piece, and is shown with one fixed and one movable corner flange. The movable flange d is made slightly tapering, and enters or passes through a slot or opening, 6, in the body 0, which construction permits the flange to be applied after the weight is in position, and to be pressed down until its tapering edges bear at the ends of the slots, and

' are thus prevented from moving farther.

The movable flanges may be used at any desired point or points, or may extend entirely around the mold, or,finally,they may be used in connection with a fixed flange or flanges, as indicated in Fig. 2.

Vhatever the construction, it is desirable that the flanges be so made, or that they be placed at such distance apart,that in applying the weight to the mold they shall shear or slice off a thin layer of the sand, thus insuring actual and close contact with the mold, and giving firm support thereto.

The top of the weight isprovided with openingsf, through which to pour the metal. These openings will of course be located to suit the mold or molds for which the weight is designed.

I am aware that itis not new to use in connection with a tapering sand-mold a tapering sleeve or jacket, and I make no claim to any such construction.

Having thus described my invention, what I claim isv 1. A weight for use in snap-flask molding and casting, consisting of a flat body and a 5. In combination with asand-n1old,aweight made in sections applied to its top, and provided with a flange or flanges extending downward at the corners and held firmly in place by a clasp or other fastening, substantially as shownand described.

ALEXANDER sMITH.

\Vitnesses:

MYRoN R. BOARDMAN, CHARLES W. ODELL. 

